#include <stdint.h>

uint32_t flag1;
uint32_t flag2;
void delay (uint32_t count) {
	for(; count != 0; count--) {
		/**/
	}
}
int main(void) {
	
	while(1) {
		//
		flag1 = 1;
		delay(100);
		flag1 = 0;
		delay(100);
		flag2 = 1;
		delay(100);
		flag2 = 0;
		delay(100);
	}
	return 0;
}